ui/window: Add platform windowing component

ui/window/platform_window.h

+// Copyright (c) 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef UI_WINDOW_PLATFORM_WINDOW_H_
+#define UI_WINDOW_PLATFORM_WINDOW_H_
+
+#include "ui/base/cursor/cursor.h"
+#include "ui/gfx/geometry/rect.h"
+#include "ui/gfx/native_widget_types.h"
+#include "ui/window/window_export.h"
+
+namespace gfx {
+class Point;
+}
+
+namespace ui {
+
+// Platform window.
+//
+// Each instance of PlatformWindow represents a single window in the
+// underlying platform windowing system (i.e. X11/Win/OSX).
+class WINDOW_EXPORT PlatformWindow {
+ public:
+  PlatformWindow() {}
+  virtual ~PlatformWindow() {}
+
+  // Get the accelerated widget for this window. This identifier
+  // can be used to create a compositing surface.
+  virtual gfx::AcceleratedWidget GetAcceleratedWidget() = 0;
+
+  // Show the window.
+  virtual void Show() = 0;
+
+  // Hide the window.
+  virtual void Hide() = 0;
+
+  // Get the window bounds within the screen.
+  virtual gfx::Rect GetBounds() const = 0;
+
+  // Set the window bounds within the screen.
+  virtual void SetBounds(const gfx::Rect& bounds) = 0;
+
+  // Sets the OS capture to the window.
+  virtual void SetCapture() = 0;
+
+  // Releases OS capture of the root window.
+  virtual void ReleaseCapture() = 0;
+
+  // Set the platform cursor.
+  virtual void SetCursor(PlatformCursor cursor) = 0;
+
+  // Move the platform cursor.
+  virtual void MoveCursorTo(const gfx::Point& location) = 0;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(PlatformWindow);
+};
+
+}  // namespace ui
+
+#endif  // UI_WINDOW_PLATFORM_WINDOW_H_